CN108043209A - A kind of landfill leachate is coupled method of denitration - Google Patents
A kind of landfill leachate is coupled method of denitration Download PDFInfo
- Publication number
- CN108043209A CN108043209A CN201711312106.5A CN201711312106A CN108043209A CN 108043209 A CN108043209 A CN 108043209A CN 201711312106 A CN201711312106 A CN 201711312106A CN 108043209 A CN108043209 A CN 108043209A
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- China
- Prior art keywords
- landfill leachate
- quality
- agent
- denitrfying agent
- denitration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 239000000149 chemical water pollutant Substances 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 21
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims abstract description 58
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 27
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910001868 water Inorganic materials 0.000 claims abstract description 7
- 239000003054 catalyst Substances 0.000 claims abstract description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 5
- 229910052746 lanthanum Inorganic materials 0.000 claims abstract description 4
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000007921 spray Substances 0.000 claims abstract description 4
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 6
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims description 4
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 claims description 3
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 claims description 3
- 229920000877 Melamine resin Polymers 0.000 claims description 3
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 3
- 235000012538 ammonium bicarbonate Nutrition 0.000 claims description 3
- 239000001099 ammonium carbonate Substances 0.000 claims description 3
- 235000019270 ammonium chloride Nutrition 0.000 claims description 3
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims description 3
- 235000011130 ammonium sulphate Nutrition 0.000 claims description 3
- 239000004202 carbamide Substances 0.000 claims description 3
- 235000013877 carbamide Nutrition 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 3
- ZZVUWRFHKOJYTH-UHFFFAOYSA-N diphenhydramine Chemical compound C=1C=CC=CC=1C(OCCN(C)C)C1=CC=CC=C1 ZZVUWRFHKOJYTH-UHFFFAOYSA-N 0.000 claims 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000000505 pernicious effect Effects 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000002440 industrial waste Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- WURBVZBTWMNKQT-UHFFFAOYSA-N 1-(4-chlorophenoxy)-3,3-dimethyl-1-(1,2,4-triazol-1-yl)butan-2-one Chemical compound C1=NC=NN1C(C(=O)C(C)(C)C)OC1=CC=C(Cl)C=C1 WURBVZBTWMNKQT-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/79—Injecting reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8628—Processes characterised by a specific catalyst
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/90—Injecting reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2067—Urea
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/206—Rare earth metals
- B01D2255/2063—Lanthanum
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Catalysts (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a kind of landfill leachates to be coupled method of denitration.Its method and step is：Landfill leachate is carried out prewashing processing by the first step, makes percolate concentration to a certain extent；Second step, prepare denitrfying agent, the denitrfying agent by quality very be 70~90% landfill leachate, quality very be 10~18% reducing agent, quality very for 15~20% lanthanum catalyst and quality be very 1~2% triethanolamine homogeneous agent form；Denitrfying agent is placed in the storage tank with spray gun by the 3rd step；When temperature is at 400 DEG C~1500 DEG C in burner hearth, denitrfying agent is uniformly sprayed in burner hearth for 3rd step, and nitrogen oxides in effluent is reduced to nitrogen in reaction zone for denitrfying agent and water is discharged by chimney.Present invention process is simple, protects environment, reduces operating cost, economic and practical, suitable for the method for large-scale promotion application.
Description
First, technical field
The present invention relates to a kind of method of denitration of industrial waste gas, specifically a kind of landfill leachate coupling denitration side
Method.
2nd, background technology
Currently, substantial amounts of titanium dioxide is contained in the Industrial Stoves of all trades and professions application, dore furnace, flue dust caused by boiler
Pernicious gases, the pernicious gases such as sulphur, nitrogen oxides (NOx), dust are discharged into air and pollute, and ecological environment are destroyed, to people
Body health forms huge threat.Nitrogen oxides (NOx) is one of main atmosphere pollution in pernicious gas, can not only be generated
Photochemical fog and acid rain also result in serious greenhouse effects and destroy ozone layer.Therefore to the denitration problem of industrial waste gas
The attention of people is increasingly subject to, effectively removing the nitrogen oxides (NOx) in flue gas emission becomes effective way of environment protection
Footpath.
The percolate of municipal refuse is a kind of secondary pollution liquid of refuse landfill association, complicated component, COD concentration
The content of high, tenor and ammonia nitrogen is higher, microbial nutrition element ratio imbalance etc., in line local environment to be caused seriously
Pollution.It is big that but the processing of landfill leachate shows as processing engineering construction investment, operating cost height, standard water discharge difficulty etc.
Problem.So the direct of landfill leachate utilizes the problem for being a worth research.
Gas denitrifying technology is a kind of technology controlled nitrogen oxides (NOx), currently, to nitrogen oxides (NOx)
Control majority carries out in multistage purification tower, is that first flue gas is introduced into purifying column, then oxygen is sprayed into flue gas, oxygen
Redox reaction, which is carried out, with nitrogen oxides realizes purification.But the denitration device investment of this method application and operating cost are big, account for
Ground area is big, complex process, and Operation and Maintenance is difficult.
3rd, the content of the invention
In order to solve the deficiencies in the prior art, the object of the present invention is to provide a kind of landfill leachates to be coupled method of denitration.
This kind of method denitrating technique is simple, and operating cost is low, economic and practical, particularly landfill leachate is made directly to be utilized.
Achieve the object of the present invention the technical solution adopted is that：A kind of landfill leachate is coupled method of denitration.Its specific side
Method step is：
Landfill leachate is carried out prewashing processing by the first step, makes percolate concentration to a certain extent；
Second step, prepares denitrfying agent, and the denitrfying agent is very 70~90% landfill leachate by quality, quality
Very it is 10~18% reducing agent, quality is very 1~2% very for 15~20% lanthanum catalyst and quality
Triethanolamine homogeneous agent is formed；
Denitrfying agent is placed in the storage tank with spray gun by the 3rd step；
3rd step when temperature is at 400 DEG C~1500 DEG C in burner hearth, denitrfying agent is uniformly sprayed in burner hearth, denitrfying agent exists
Nitrogen oxides in effluent is reduced to nitrogen in reaction zone and water is discharged by chimney.
It is that the COD concentration in percolate is made to reach 40000mg/L, ammonia nitrogen to a certain degree that the landfill leachate, which is concentrated to,
Content reach 15000mg/L.
The reducing agent can be one kind in melamine, urea, ammonium chloride, ammonium sulfate, ammonium hydrogen carbonate.
The beneficial effects of the invention are as follows：Since of the invention directly produced using landfill leachate can improve nitrogen oxides
The high denitrfying agent of removal rate, and denitrfying agent is injected directly into the burner hearth for generating nitrogen oxides, nitrogen oxides in effluent is reduced
For nitrogen and water, nitrogen oxides in effluent is effectively removed.So present invention process is simple, protect environment, reduce operation into
This, it is economic and practical, suitable for the method for large-scale promotion application.
4th, specific embodiment
A kind of landfill leachate is coupled method of denitration.Its specific method step is：
Landfill leachate is carried out prewashing processing by the first step, makes percolate concentration to a certain extent；
Second step, prepares denitrfying agent, and the denitrfying agent is very 70~90% landfill leachate by quality, quality
Very it is 10~18% reducing agent, quality is very 1~2% very for 15~20% lanthanum catalyst and quality
Triethanolamine homogeneous agent is formed；
Denitrfying agent is placed in the storage tank with spray gun by the 3rd step；
3rd step when temperature is at 400 DEG C~1500 DEG C in burner hearth, denitrfying agent is uniformly sprayed in burner hearth, denitrfying agent exists
Nitrogen oxides in effluent is reduced to nitrogen in reaction zone and water is discharged by chimney.
It is that the COD concentration in percolate is made to reach 40000mg/L, ammonia nitrogen to a certain degree that the landfill leachate, which is concentrated to,
Content reach 15000mg/L.
The reducing agent can be one kind in melamine, urea, ammonium chloride, ammonium sulfate, ammonium hydrogen carbonate.
The present invention using landfill leachate as carrier, by being anticipated to percolate, add reducing agent with
Denitrfying agent liquid is made in catalyst, liquid is injected in the burner hearth of the Industrial Stoves of burning, dore furnace, boiler, high-temperature flue gas
In nitrogen oxides (NOx) under catalyst action with reducing agent react, NOx is reduced into ammonia and water.
Its chemical equation is：
Claims (3)
1. a kind of landfill leachate is coupled method of denitration.Its specific method step is：
Landfill leachate is carried out prewashing processing by the first step, makes percolate concentration to a certain extent；
Second step, prepares denitrfying agent, and the denitrfying agent is very 70~90% landfill leachate by quality, quality percentage
Hundred be 10~18% reducing agent, quality very for 15~20% lanthanum catalyst and quality be very 1~2% three second
Hydramine homogeneous agent is formed；
Denitrfying agent is placed in the storage tank with spray gun by the 3rd step；
3rd step when temperature is at 400 DEG C~1500 DEG C in burner hearth, denitrfying agent is uniformly sprayed in burner hearth, denitrfying agent is reacting
Nitrogen oxides in effluent is reduced to nitrogen in area and water is discharged by chimney.
2. a kind of landfill leachate coupling method of denitration as described in claim 1, it is characterised in that：The landfill leachate
Concentration is to make that the COD concentration in percolate reaches 40000mg/L, the content of ammonia nitrogen reaches 15000mg/L to a certain extent.
3. a kind of landfill leachate coupling method of denitration as described in claim 1, it is characterised in that：The reducing agent can be with
It is one kind in melamine, urea, ammonium chloride, ammonium sulfate, ammonium hydrogen carbonate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711312106.5A CN108043209A (en) | 2017-11-28 | 2017-11-28 | A kind of landfill leachate is coupled method of denitration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711312106.5A CN108043209A (en) | 2017-11-28 | 2017-11-28 | A kind of landfill leachate is coupled method of denitration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108043209A true CN108043209A (en) | 2018-05-18 |
Family
ID=62124087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711312106.5A Pending CN108043209A (en) | 2017-11-28 | 2017-11-28 | A kind of landfill leachate is coupled method of denitration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108043209A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6039874A (en) * | 1997-10-07 | 2000-03-21 | Ajt & Associates, Inc. | Apparatus and method for purification of agricultural animal waste |
| US20140079615A1 (en) * | 2012-09-14 | 2014-03-20 | Mitsubishi Heavy Industries, Ltd. | Exhaust gas treatment system and a method of treating exhaust gas |
| CN103846094A (en) * | 2014-03-04 | 2014-06-11 | 南京工业大学 | Catalyst for cement kiln flue gas denitration and preparation method thereof |
| CN104801171A (en) * | 2015-05-08 | 2015-07-29 | 中国环境科学研究院 | SNCR (selective non-catalytic reduction) flue gas denitrification method and device utilizing organic/ammonia nitrogen waste liquid |
| CN105214644A (en) * | 2015-09-18 | 2016-01-06 | 山东天璨环保科技有限公司 | Modified titanium and its preparation method and application |
| CN106076358A (en) * | 2016-06-12 | 2016-11-09 | 南京工业大学 | Catalyst for low-temperature SCR denitration in cement industry and preparation method thereof |
| CN106311276A (en) * | 2016-08-30 | 2017-01-11 | 沈阳三聚凯特催化剂有限公司 | Denitration catalyst and preparation method thereof |
| CN106377991A (en) * | 2016-11-09 | 2017-02-08 | 中国科学院过程工程研究所 | Device and method for removing nitric oxide in smoke gas by landfill leachate |
-
2017
- 2017-11-28 CN CN201711312106.5A patent/CN108043209A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6039874A (en) * | 1997-10-07 | 2000-03-21 | Ajt & Associates, Inc. | Apparatus and method for purification of agricultural animal waste |
| US20140079615A1 (en) * | 2012-09-14 | 2014-03-20 | Mitsubishi Heavy Industries, Ltd. | Exhaust gas treatment system and a method of treating exhaust gas |
| CN103846094A (en) * | 2014-03-04 | 2014-06-11 | 南京工业大学 | Catalyst for cement kiln flue gas denitration and preparation method thereof |
| CN104801171A (en) * | 2015-05-08 | 2015-07-29 | 中国环境科学研究院 | SNCR (selective non-catalytic reduction) flue gas denitrification method and device utilizing organic/ammonia nitrogen waste liquid |
| CN105214644A (en) * | 2015-09-18 | 2016-01-06 | 山东天璨环保科技有限公司 | Modified titanium and its preparation method and application |
| CN106076358A (en) * | 2016-06-12 | 2016-11-09 | 南京工业大学 | Catalyst for low-temperature SCR denitration in cement industry and preparation method thereof |
| CN106311276A (en) * | 2016-08-30 | 2017-01-11 | 沈阳三聚凯特催化剂有限公司 | Denitration catalyst and preparation method thereof |
| CN106377991A (en) * | 2016-11-09 | 2017-02-08 | 中国科学院过程工程研究所 | Device and method for removing nitric oxide in smoke gas by landfill leachate |
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